Transferrer arm for weft replenishing looms



c. P. BERGSTROM I TRANSFERRER ARM FOR WEFT REPLENISHING LOOMS Aug. 22, 1950 Filed June 10, 1949 w n W 5 4 Q 7 a e 2 I 5 2 F i ,4.

INVENTOR CARL P. BERGSTROM CA E ATTORNEY Patented Aug. 22, 1950 TRANSFERRER ARM, E03,. WEFT REPLENISHING. LQQMS;

Carl B... Bergstrom, Millbury, Massl, assignorto Gro n-etc 8; Knowleshoom Works, Worcestcr Mass., a corporation of Massachusetts:

Application June 1 '0, 1949, Serial No. 983244 S ums. (Cl. 139:2: t

der one condition of weaving a reserve bobbin g may have a, relatively small. yarn diameter, but under another condition the. yarn may have a larger diameter. As heretofore made transferrer arms. have been able to meet. onlycne particular set ofconditi'ons and have. not ordinarily been adapt-able, for use: with. a variety of yarn diam eters. The transferrer arm usually has. a heel which engages the butt of the bobbin and also a part integral with the heel: which engages the yarn. so that the. bobbin being transferred can b acted.- on a two poin s long its, length- I is n i por ant object of the present invent o o provide a. ransierrer arm. hati preferablya ermanen yam engagin part; and a r placeableheel t r n agemen wi h: h b in butt. If th yarn d am r s, large relat vely to the bobbin butt the heel will be relatively thick so that it, caneng ag'ethe: bitt of the. bobbin at. about the me ime that the yarn en a ing,- part or the transferrer arm. strikes the wound package of yarn on the bobbin. If on the. other the yarn diameter is small. the heel. will then be thin so that: the bobbin engagingparts. of the transierrer armcan. strike the bobbin at substan-. tially the same time during the, transferring op. eration.

It; a. furth r object of. the invention to provide a. transferrer arrn so constructed that it. can have one or another oi two or more different heels. Secured thereto by readily detachable means.

With these and other objects in view, will appear as the descrintion; proceeds, the. invention resides in the combination and arrangement of parts hereinafter described and set forth.

In the accompanying drawings, wherein two fOIms of the invention are set forth,

Fig l is a side. elevation oi part of a weft re-. plenishing loom having th preferred form of the invention applied thereto, the; lay, shuttle, and shuttle box being shown in cross section,

Fig, 2 is a front elevation looking in the direction of arrow 2, Fig. 1, showing the preferred form of the invention use with a bobbin the butt and yarn diameters of which are substantially the same,

3 isan: enlarged vertical section on line 3-3; Fig. 2,

Fig. 4 isa section on l'ine 4-4', Fig. 3,

Fig. is a view similar toFig. 2, but shows a bobbin having a relatively large butt and a smaller yarn diameter;

Fig. 6 is a view similar to Fig. 2', but shows the transferrer arm adapted for use with a bobbin the yarn diameter of which is largerthan the butt diameter,

Fig. is a view similar to Fig. 2, but showing the. modified form of theinvention adapted for use with a bobbin the buttdiameter of which is larger than the yarn diameter,

Fig... 8 is an enlarged vertical section on line tie-.81, Fig. 'I, and

Fig; 9 isa section on line 9-4}, Fig; 8;

Referring particularly to Fig. 1, the m frame W: has mounted thereon a support H" for a magazine M which. in the present. instance is of the rocking: type mounted on pivot: stud I2 carried by the support H. The: magazine has front and back stacks f3 and M of reservebobbins which move by gravit'yto positions from which they can be. transferred into: one or the other of the two shuttles with which the loom operates, one. of the shuttles being: indicated at. S. iihe latter atthe: time; of Weft re l'enishment will be in a shuttle box: t5 on. the. lay' 1:6, and;- the latter has a hunter tlto. engage a latch [8; on transferrer arm F9, The latter is pivoted on a. stud 2.9; carried by the support H and is normally in the raised idle. position. mdicatcd in Fi l with the r nsierrer lat-ch l8: down: posi ion- By m ans of; Weill-known mecha ism: not shown herein the, latch I8 is lifted into alignment with the bunter H for enga ement with the latter when a. Weft replenishing oneratiorr occurs. At this time forward motion of the. law; that is, motion tothe left as viewed in.- Fig. 1, cause the banter to rock; the, transferrer arm i9 around the: stud 2-0. to more a. re erve bobbin from the ma azineinto the shut l A. latch holder H is pivoted" at. at tot-he transterror arm is and is provided with; an adjus screw 23 engaging the forward end of latch Hito determine the relative position of the latchwith resoect o: the holder and trans errer arm. A, bolt 24. seen-res the: latch in its adjusted pee sition to the. holder. By varying position of the latch the amount oi motion oi the transierrer arm can be. changed,. the; motion. being increasedf the ch adiusted rearward-1r towar hunter U. and reduced it the latch is.- actiusted forwardly away from the hunter.

The transferrer arm, as shown more particularly in Fig. 2, has a heel supporting part 25 and a yarn engaging part 26 joined by a web 21. The web and the two parts 25 and 26 are integral and may be secured in any approved manner to the transferrer arm I9 and ordinarily form a part of the latter.

The bobbins in the magazine will ordinarily have a butt, a tip, and a wound mass of weft thereon between the butt and the tip. The bobbin shown in Fig. 2, designated at Bl, has a butt 28 provided with the usual metallic rings 29. The yarn will be engaged by the part 26 of the transferrer arm, whereas the butt of the bobbin will be under the part 25.

The matter thus far described is of common construction and may operate in the usual manner.

The present invention relates to means for adapting the transferrer arm for use with a variety of conditions in which the weft or yarn package may be of different diameters. As shown in Fig. 2 the condition exists wherein the butt and yarn YI are of the same diameter so that the part of the transferrer arm which engages the butt should be at the same level as the bottom of part 26 of the transferrer arm. This result is accomplished in the preferred form of the invention by having the transferrer arm equipped with an angle shaped heel 39 having an upright shank 3| held to the transferrer arm by screws 32 extending into tapped holes 33 in the transferrer arm. The heel 39 has a horizontal shoe or foot 34 which is the part of the heel which has direct engagement with the metallic rings 29. The top of the foot has a surface 35, preferably fiat, which fits closely against a similar surface 36 on the bottom of transferrer arm part 25. The under surface 3! of the foot is concave to fit rings 29.

In the condition shown in Fig. 2 the foot 34 will be of such a thickness that the concave surface 31 will engage the rings 29 at the same time that the bottom of part 26 of the transferrer arm engages the yarn Yl. If it be desired to use the transferrer arm with a bobbin B2 the yarn diameter Y2 of which is less than the diameter of rings 29 the conditions will then be as set forth in Fig. 5. Under these conditions a different heel 40 will be employed having a shank 4| similarto shank 3|, but having a foot 42 which will be thinner than the foot 34 but otherwise similar to the latter to cooperate with the rings 29. The heel 40, having its under surface relatively high with respect to the yarn engaging part 25, will not engage the rings 29 until the yarn part engages the yarn Y2.

If, on the other hand, a bobbin B3 as indicated in Fig. 6 has a yarn diameter Y3 larger than the rings 29, a still different heel 45 will be utilized, this heel having a shank 46 similar to shank 3i and having a foot 41 which will be relatively thick so that its under surface can strike the rings 29 at the same time that the transferrer part 26 strikes the yarn Y3. The previously described screw 23 can be adjusted in accordance with the thickness of the foot of the particular heel being used.

It will thus be seen that the same transferrer arm is adaptable for use with a variety of forms of bobbins merely by being equipped with the correct heel for any given condition of yarn diameter. The screws 32 permit ready replacement of one form of heel with another.

In the modified form of the invention the transferrer arm 50 will be very similar to the transferrer arm l9 except that the lower end of the butt part 5| thereof will be adapted for holding a different type of heel. In describing the modified form only one condition of yarn diameter will be set forth, namely, that in which the diameter of yarn Y4 is less than that of rings 29, see Fig. '7. A heel 52 having a relatively thin foot 53 will be used under this condition. The foot is formed with a concave under surface 54 for engagement with the rings 29. A lug or shank 55 extends upwardly from the heel into a hole 55 drilled into the transferrer arm 50. A tapered pin 51 is driven through the lower part of the transferrer arm and the shank 55 and secures the heel 52 to the transferrer arm in position for correct engagement with the bobbin butt. The top surface 59 of foot 53 will be drawn up tightly against the bottom surface 59 of the transferrer arm part 5| by pin 51.

The modified form of heel lends itself to use under the same variety of conditions as those already described in connection with the preferred form of the invention. The foot of the modified heel can be of a thickness to suit the transferrer arm for use with any diameter of yarn. It is not thought necessary to illustrate other conditions in connection with the modified form, since the variations in thickness of the foot will correspond to conditions already described in connection with the preferred form of heel.-

From the foregoing it will be seen that the transferrer arm has a yarn engaging part 26 and is so constructed that it can have secured thereto any one of several bobbin butt engaging heels the feet of which are of different thicknesses to accommodate varying conditions of yarn diameters. The bottoms of the two parts 25 and 29 of the transferrer arm are at such a difference of level that they cannot engage the weft and butt of bobbins usually encountered in weaving, but by selecting the correct heel the difference in level between it and part 26 can be made the same as the difference in the radii of the butt and weft of the bobbin being transferred, and as a result both parts of the transferrer arm will strike the bobbin at substantially the same time during a bobbin transferring operation. In the preferred form of the invention the transferrer arm is made to receive the vertical shank of any one of several angle shaped heels, whereas in the modified form the transferrer arm has a hole 55 to receive the lugs or shanks 55. In the preferred form the screws 32 permit ready replacement of one heel by another, and in the modified form the replacement is effected by removal of the tapered pin 51.

Having thus described the invention it will be seen that changes and modifications of the fore going specific disclosure may be made without departing from the spirit and scope of the invention.

What is claimed as new is:

1. In a transferrer arm for a weft replenishing loom operating with a reserve bobbin having a butt and a wound mass of weft, a part on the transferrer arm for engagement with the wound mass of weft a second part on the transferrer arm corresponding to the butt of the bobbin, a heel on said second part having a foot for engagement with the bobbin butt and having also a shank extending away from said foot, and removable means normally securing the shank to said second part of the transferrer arm to hold said foot in bobbin butt engaging position on the transferrer arm, the foot beingof such thickness that the first named part of the transferrer arm and said foot engage the yarn and butt, re-- speetively, at substantially the same time during a bobbin transferring operation of the trans-- ferrer arm.

2. In a transferrer arm for a weft replenishing loom operating with a reserve bobbin having a butt and a wound mass of weft, a part on the transferrer arm for engagement with the wound r s of weft, a second part on the transierrer corresponding to the butt of the bobbin, a h l on said second part having a foot for engagement with the bobbin butt and having also shank extending away from one end of said foot and removable means securing said shank to said second part to hold said foot in position to engage the bobbin butt, the foot being of such thickness that first named part on the transferrer arm and said foot engage the yarn and butt, respectively, at substantially the same time during a bobbin transferring operation of the transferrer arm.

In a transferrer arm for a weft replenishing loom operating with a reserve bobbin having a butt and a wound mass of weft, a part on the transferrer arm for engagement with the wound mass of weft, a second part on the transferrer arm corresponding to the butt of the bobbin, said second part having a screw threaded hole therein, a heel on said second part having a foot for engagement with the bobbin butt and having also a shank extending from said foot along said second part, and a screw securing said shank to said second part of the transferrer arm fitting into said screw threaded hole and holding the heel to the transferrer arm with said foot in position to engage the bobbin butt during a bobbin transferring operation of the transferrer arm.

In a transferrer arm for a weft replenishing loom operating with a reserve bobbin having a butt and a wound mass of weft, a part on the transferrer arm for engagement with the Wound mass of weft, a second part on the transferrer arm corresponding to the butt of the bobbin, said second part having a hole therein, a heel on said second part having a foot below the latter for engagement with the bobbin butt and having also a shank extending upwardly from said foot into the hole in said second part of the transferrer arm, and removable means passing through said second part of the transferrer arm and said shank securing the heel to the transferrer arm with said foot in position to engage the butt of a bobbin during a bobbin transferring operation.

5. In a transferrer arm for a weft replenishing loom operating with a reserve bobbin having a butt and a wound mass of weft, a part integral with the transferrer arm for engagement with the wound mass of weft, a second part on the transferrer arm corresponding to the butt of the bobbin, said second part of the transferrer arm having a hole extending upwardly therein from the bottom thereof, a heel on said second part having a foot under the latter and formed with a shank extending into said hole, and. a taper pin driven into said second part of the transferrer arm and through said shank holding the heel on the transferrer arm with said foot in position to engage the butt of a bobbin being transferred during a transferring opera tion of the transferrer arm.

6. In a transferrer arm for a weft replenishing loom operating with a reserve bobbin having a butt of a given radius and a wound mass of weft of a different radius, a part on the transferrer arm for engagement with the wound mass of weft, a second part on the transferrer arm corresponding to the butt of the bobbin, the difference in level between the bottoms of said two parts of the transferrer arm being different from the difference in the radii of the butt and wound mass of weft, a heel secured to said second part of the transferrer arm having a foot under said second part, and removable means holding said heel to said second part, said foot being of such thickness that the difference in level between the first named part of the transferrer arm and the bottom surface of the foot is equal substantially to the difference between the radius of the butt and the radius of said wound mass of weft of said bobbin.

7. In a transferrer arm for a weft replenishing loom capable of operating with bobbins the butt diameters of which vary with respect to the diameters of the weft mass on the bobbins, the transferrer arm to operate with any one of a plurality of different bobin butt engaging heels having similar shanks and each heel having a foot, the feet of the different heels being of different thicknesses, a part on the transferrer arm for engagement with the wound mass of weft, a second part on the transferrer arm corresponding to the butt of the bobbin being formed to fit the shank of any of said plurality of heels, and removable means holding the shank of any selected heel to said second part of the transferrer arm with the corresponding foot in position to engage the butt of the bobbin being transferred, the foot of the selected heel and the first named part of the transferrer arm being effective during a bobbin transferring operation to engage the butt and mass of weft, respectively, of the bobbin being transferred at substantially the same time.

CARL P. BERGSTRQM.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 591,998 Burton Oct. 19, 1897 1,019,098 Stimpson Mar. 5, 1912 2,488,158 Beatrice Nov. 15, 1949 

